Hypoxia potentiates traumatic brain injury-induced expression of c-fos in rats
- 20 January 1997
- journal article
- molecular neuroscience
- Published by Wolters Kluwer Health in NeuroReport
- Vol. 8 (2) , 395-398
- https://doi.org/10.1097/00001756-199701200-00002
Abstract
HALOTHANE-anesthetized male rats were subjected to either moderately severe parasagittal fluid percussion- induced traumatic brain injury (TBI) or sham injury, and for 30 min immediately after injury hypoxia was induced in half the rats from each group by substituting a 13% O2 source to deliver halothane for continued anesthesia. At 60 min post-TBI, Northern blot analysis showed a significant increase in c-fos mRNA levels, by 60–100% above sham control levels in the frontal cortex, cerebellum and hippocampus. Although hypoxia in sham-injured rats did not by itself alter c-fos mRNA levels, it did significantly potentiate the TBI-induced changes in c-fos mRNA in all three brain regions. These findings show that hypoxia is an important factor influencing genomic responses to TBI.Keywords
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